好的,这是问题所在:我有一个NSTextView
,我使用以下方法添加了自定义NSButton
:
[_textView addSubview:button];
然后,在我的NSButton
子类中,我有(以及NSTrackingArea
的东西):
- (void)mouseEntered:(NSEvent *)event{
[[NSCursor arrowCursor] set];
}
- (void)mouseExited:(NSEvent *)theEvent{
[[NSCursor arrowCursor] set];
}
- (void)mouseDown:(NSEvent *)theEvent{
[[NSCursor arrowCursor] set];
}
- (void)mouseUp:(NSEvent *)theEvent{
[[NSCursor arrowCursor] set];
}
但是当我将其悬停时,光标保持不变IBeamCursor
(因为它是NSTextView
)。只有当我按下按钮时,光标才会更新。然后,当我移动鼠标时,仍在按钮内,光标返回到IBeamCursor
。有关如何执行此操作的任何想法?谢谢!
添加仅跟踪进入/退出事件的跟踪区域对于NSTextView
子视图似乎还不够。文本视图总是以某种方式获胜并将其设置为IBeamCursor
。
当在NSTrackingMouseMoved
子类中添加跟踪区域时,您可以尝试始终启用对鼠标move事件(NSButton
)的跟踪:
#import "SSWHoverButton.h"
@interface SSWHoverButton()
{
NSTrackingArea* trackingArea;
}
@end
@implementation SSWHoverButton
- (void)mouseMoved:(NSEvent*)theEvent
{
[[NSCursor arrowCursor] set];
}
- (void)updateTrackingAreas
{
if(trackingArea != nil)
{
[self removeTrackingArea:trackingArea];
}
NSTrackingAreaOptions opts = (NSTrackingMouseMoved|NSTrackingActiveAlways);
trackingArea = [[NSTrackingArea alloc] initWithRect:[self bounds]
options:opts
owner:self
userInfo:nil];
[self addTrackingArea:trackingArea];
}
- (void)dealloc
{
[self removeTrackingArea:trackingArea];
}
@end
Swift 5变体:
import Cocoa
class InsideTextButton: NSButton {
var trackingArea: NSTrackingArea?
override func mouseMoved(with event: NSEvent) {
NSCursor.arrow.set()
}
override func updateTrackingAreas() {
if let area = trackingArea {
removeTrackingArea(area)
}
trackingArea = NSTrackingArea(rect: self.bounds, options: [.mouseMoved, .activeAlways], owner: self, userInfo: nil)
if let area = trackingArea {
addTrackingArea(area)
}
}
deinit {
if let area = trackingArea {
removeTrackingArea(area)
}
}
}